Question

State two phenomenon of diffusion​

Answer 1

SOLUTION

Osmosis is the process of flow of fluid from higher to lower concentration through the semi-permeable membrane. The wall of xylem vessels behaves as the semi-permeable membrane so diffusion of water from one xylem vessel to another xylem vessel can be called the phenomenon of osmosis.

In all other three cases, there is no presence of semi-permeable membrane so, it is the simple diffusion process.

So, the correct answer is the 'xylem vessel to xylem vessel'.

Answer 2

Diffusion, a Mass Transfer Phenomenon

Diffusion, a Mass Transfer PhenomenonDiffusion is a mass transfer phenomenon that causes the distribution of a chemical species to become more uniform in space as time passes. In this case, species is a chemical dissolved in a solvent or a component in a gas mixture, such as the oxygen in air.